Unit 731 in The War That Came EarlyEdit
In 1940, Unit 731 saw an influx of Soviet prisoners of war captured by Japanese forces at Vladivostok. There the POWs, dubbed "logs", were subject to a variety of experiments under the supervision of Colonel Shiro Ishii. These experiments continued even after a peace settlement had been concluded between Japan and the USSR not long after Vladivostok fell.
Sergeant Hideki Fujita was assigned as a guard at Unit 731 in the middle of 1940 and remained there into the next year. During that time, Japan went to war with the United States in January 1941. In short order, American Marines were captured in China and sent to Unit 731. Unlike their Soviet counterparts, the Americans actively sought to escape captivity. Herman Szulc's efforts led to three escapes, and consequently to Fujita's demotion to corporal.